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Rollup merge of #108136 - eggyal:unmet_trait_alias_bound_on_generic_impl, r=compiler-errors

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Do not ICE on unmet trait alias impl bounds

Fixes #108132

I've also added some documentation to the `impl_def_id` field of `DerivedObligationCause` to try and minimise the risk of such errors in future.

r? `@compiler-errors`
This commit is contained in:
Matthias Krüger 2023-02-17 00:19:37 +01:00 • committed by GitHub
commit ecdb7bcee8
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10 changed files with 59 additions and 13 deletions
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2
compiler/rustc_infer/src/traits/util.rs
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@ -158,7 +158,7 @@ impl<'tcx> Elaborator<'tcx> {
traits::ImplDerivedObligation(Box::new(
traits::ImplDerivedObligationCause {
derived,
impl_def_id: data.def_id(),
impl_or_alias_def_id: data.def_id(),
impl_def_predicate_index: Some(index),
span,
},